A scientist who is developing a machine to project unlimited power is being held prisoner by the evil Captain Mephisto, a pirate from 200 years ago who uses his Transformation Machine to disguise himself as one of the four owners of Mystery Island. A criminologist and the scientist's daughter go to Mystery Island to rescue him.
Director:Spencer Gordon Bennet, Wallace Grissell and Yakima Canutt Producer:Ronald Davidson Production Company:Republic Pictures Audio/Visual:Mono, Black & White Language:English Keywords:Serial; Sci-Fi